Improved air circulation mechanism for hot air circulation debinding furnace

Abstract

The utility model discloses an improved air circulation mechanism for a hot air circulation debinding furnace, which comprises an air pipe provided with a fan, a cavity is arranged in the air pipe, a transparent block is fixed on the air pipe, the inside of the cavity can be directly observed through the transparent block, an infrared sensor is arranged on the transparent block, a first stop block is fixed in the cavity, and a second stop block is arranged in the cavity. A gap between the first check block and the inner wall of the cavity forms a first notch, and a blocking piece for blocking the first notch is further arranged on the air pipe. According to the utility model, after the motor is started, the blocking block can move in the cavity in the vertical direction until the first notch is blocked by the blocking block, so that the effect of cutting off internal communication of the cavity is achieved, gas on one side of the cavity cannot reach the other side of the cavity, and even if the gas in the cavity is burnt, the burnt gas cannot be continuously transmitted.

Description

Technical Field

[0001] The utility model relates to the technical field of degreasing furnaces, in particular to an improved air circulation mechanism for hot air circulation degreasing furnaces. Background Art

[0002] The thermal cycle debinding furnace is a type of debinding furnace, which includes a circulating airflow pipeline and a circulating fan as its airflow generating device. The workpiece conveying track is located in a part of the circulating airflow pipeline, and the combustion device conveys heat to the airflow flowing through the circulating pipeline.

[0003] However, when a small amount of fat combustibles are mixed in the air flow channel between the workpiece conveying track and the burner, once the sparks of the combustion device accidentally ignite the combustible gas in the circulating air flow pipeline, an open flame will be generated in the pipeline. The flame may spread along the pipeline to the circulating fan, which is quite dangerous. Therefore, the traditional degreasing furnace needs to be improved to prevent the above-mentioned problems. Utility Model Content

[0004] The utility model aims to solve the above problems and proposes an improved air circulation mechanism for a hot air circulation degreasing furnace.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An improved air circulation mechanism for a hot air circulation degreasing furnace comprises an air duct equipped with a fan, a cavity being opened in the air duct, a transparent block being fixed on the air duct, and the interior of the cavity can be directly observed through the transparent block, an infrared sensor being installed on the transparent block, a stopper one being fixed in the cavity, and a gap one being formed by a gap between the stopper one and the inner wall of the cavity, and a sealing member for sealing the gap is also provided on the air duct.

[0007] Preferably, the blocking member comprises a motor fixed on the air duct, the output shaft of the motor drives a rotating rod to rotate, the rotating rod is connected to the blocking block by threads, and the side wall of the blocking block is slidably connected to the inner wall of the cavity.

[0008] Preferably, a second stopper is fixed in the cavity, and a gap between the second stopper and the inner wall of the cavity forms a second gap, and the first gap and the second gap form a Z shape.

[0009] Preferably, the air duct is provided with an opening, and the opening is blocked by a closing plate, and the closing plate and the air duct are fixed by bolts.

[0010] Preferably, the upper surface of the closing plate is in contact with the end of the rotating rod.

[0011] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0012] 1. After the motor is started, the block can move vertically in the cavity until the block blocks the gap, thereby cutting off the internal connection of the cavity. Therefore, the gas on one side of the cavity cannot reach the other side. Therefore, even if the gas in the cavity burns, the burning gas will not continue to be transmitted.

[0013] 2. The present application can change the wind direction of the airflow in the cavity during its flow by the cooperation of block 1 and block 2, thereby slowing down the speed of the airflow in the cavity and giving the block time to close gap 1. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic diagram of the structure of the air circulation duct provided according to an embodiment of the utility model is shown;

[0015] Figure 2 The figure shows a schematic diagram of the internal cross-sectional structure of the air circulation duct provided according to an embodiment of the utility model;

[0016] Legend:

[0017] 1. Air duct; 2. Cavity; 3. Transparent block; 4. Infrared sensor; 5. Block 1; 6. Notch 1; 7. Block 2; 8. Notch 2; 9. Motor; 10. Rotating rod; 11. Block; 12. Opening; 13. Closing plate; 14. Bolt. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] Embodiment 1:

[0020] The utility model provides a technical solution, please refer to Figure 1-2 :

[0021] An improved hot air circulation degreasing furnace air circulation mechanism includes an air duct 1 with a fan installed, a cavity 2 is opened in the air duct 1, a transparent block 3 is fixed on the air duct 1, and the inside of the cavity 2 can be directly observed through the transparent block 3, and an infrared sensor 4 is installed on the transparent block 3, and the infrared sensor 4 can detect whether there is an open flame in the cavity 2 through the transparent block 3. It is a direct reference to the prior art and is not repeated here. A block 15 is fixed in the cavity 2, and the gap between the block 15 and the inner wall of the cavity 2 forms a gap 16. The air duct 1 is also provided with a blocking member for blocking the gap 16. A block 27 is fixed in the cavity 2, and the gap between the block 27 and the inner wall of the cavity 2 forms a gap 28, and the gap 16 and the gap 28 form a Z shape. With the cooperation of the block 15 and the block 27, the wind direction of the airflow in the cavity 2 can be changed during the flow, which plays a role in slowing down the speed of the airflow flowing in the cavity 2. Give the block 11 time to close the gap 16.

[0022] Embodiment 2:

[0023] The technical solution is basically the same as that of the first embodiment, except that Figure 2 As shown, the blocking member includes a motor 9 fixed on the air duct 1, the output shaft of the motor 9 drives the rotating rod 10 to rotate, the rotating rod 10 is connected to the blocking block 11 by threads, and the side wall of the blocking block 11 is slidably connected to the inner wall of the cavity 2. After the motor 9 is started, the blocking block 11 can be moved vertically in the cavity 2 until the blocking block 11 blocks the gap 6, thereby cutting off the internal communication of the cavity 2. Therefore, the gas on one side of the cavity 2 cannot reach the other side.

[0024] Embodiment three:

[0025] The technical solution is basically the same as that of the first embodiment, except that Figure 2 As shown, the air duct 1 is provided with an opening 12, and the opening 12 is blocked by a closing plate 13, and the closing plate 13 is fixed to the air duct 1 by bolts 14. Therefore, after the closing plate 13 is removed, a new block 11 can be replaced, so that the block 11 can be effectively prevented from being corroded in the cavity 2. The upper surface of the closing plate 13 is in contact with the end of the rotating rod 10. Therefore, when the rotating rod 10 rotates, the closing plate 13 will not be worn.

[0026] In summary, once the infrared sensor 4 detects an open flame in the cavity 2 through the transparent block 3, the motor 9 is started and the rotating rod 10 rotates. The blocking block 11 moves in the cavity 2 until the blocking block 11 blocks the gap 6. At this time, the inside of the cavity 2 is closed, and the airflow cannot drive the open flame to continue to transmit, thereby achieving a protective effect.

[0027] The above description of the embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An improved hot air circulation degreasing furnace air circulation mechanism, comprising an air duct (1) equipped with a fan, characterized in that: The air duct (1) is provided with a cavity (2), a transparent block (3) is fixed on the air duct (1), and the interior of the cavity (2) can be directly observed through the transparent block (3), an infrared sensor (4) is mounted on the transparent block (3), a stopper (5) is fixed in the cavity (2), and a gap (6) is formed between the stopper (5) and the inner wall of the cavity (2), and a blocking member for blocking the gap (6) is also provided on the air duct (1).

2. The improved hot air circulation degreasing furnace air circulation mechanism according to claim 1 is characterized in that: The blocking member comprises a motor (9) fixed on the air duct (1), the output shaft of the motor (9) driving a rotating rod (10) to rotate, the rotating rod (10) being connected to a blocking block (11) by threads, and the side wall of the blocking block (11) being slidably connected to the inner wall of the cavity (2).

3. The improved hot air circulation degreasing furnace air circulation mechanism according to claim 1, characterized in that: A second stopper (7) is fixed in the cavity (2), and a gap between the second stopper (7) and the inner wall of the cavity (2) forms a second notch (8), and the first notch (6) and the second notch (8) form a Z shape.

4. The improved air circulation mechanism for hot air circulation degreasing furnace according to claim 1, characterized in that: The air duct (1) is provided with an opening (12), and the opening (12) is blocked by a closing plate (13), and the closing plate (13) and the air duct (1) are fixed by bolts (14).

5. The improved air circulation mechanism for hot air circulation degreasing furnace according to claim 4, characterized in that: The upper surface of the closing plate (13) is in contact with the end of the rotating rod (10).

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